近日，beat365手机版官方网站光电子物理与器件专业的张陈成博士生在卜胜利教授的指导下以第一作者在国际期刊《纳米材料》(Nanomaterials，工程技术大区2区，影响因子5.076)发表最新研究成果。该成果报道了一种基于回音壁模式和填充磁性软物质光子晶体光纤相结合的磁场传感技术，具有非常重要的学术意义和应用前景，被选为当期的封面论文，封面标题为：Nanostructured Magnetic Fluid Enables Magnetic Field Measurement。
当期封面
beat365手机版官方网站光子学团队创新性地将磁性软物质灌入光子晶体光纤，形成回音壁柱形微腔，并通过拉锥微光纤耦合，在光子晶体周围有效地激发回音壁模式。团队成功实现了新型磁场传感结构，并系统研究了其传感机理，该磁场传感结构具有高效耦合和易于制作的优点，有望应用于磁场监测等领域。该成果还被期刊在当期以“Cover Story”的形式进行了报道，内容如下：
Cover Story: Magnetic fluid is a kind of nanostructured material which consists of surfactant-coated magnetic nanoparticles dispersed in a suitable base liquid. This “old” nanomaterial has led to renewed interest in optics and photonics since the beginning of the 21st century. It is compatible and easily integrated with optical fibers, opening the door to “seeing” vast prospects for applications in the fiber-optic magnetic field sensing area. This work demonstrates the feasibility of actualizing magnetic field sensors with magnetic-fluid-infiltrated photonic crystal fibers. The whispering gallery mode is effectively excited around the photonic crystal by the tapered microfiber. Reducing the cladding thickness of photonic crystal fibers can increase magnetic field sensitivity, which implies a convenient tunability of sensitivity for pragmatic applications.
论文链接：https://www.mdpi.com/2079-4991/12/5/862
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